Emulsion cosmetic composition containing self-emulsifying agent and self-emulsifying stabilizer

Abstract

The present invention relates to an emulsion cosmetic composition with excellent stability.

1 . An emulsion cosmetic composition comprising: an aqueous phase containing a self-emulsifying agent and a self-emulsifying stabilizer; and an oil phase,
 wherein the self-emulsifying stabilizer is an amphiphilic substance, and   the self-emulsifying stabilizer is contained in an amount of 0.01 to 5 wt % based on a total weight of the emulsion cosmetic composition.   
     
     
         2 . The emulsion cosmetic composition of  claim 1 , wherein the self-emulsifying agent is a polymer having a hydrophobic alkyl chain. 
     
     
         3 . The emulsion cosmetic composition of  claim 1 , wherein the self-emulsifying agent comprises at least one selected from the group consisting of an acrylates/C10-30 alkyl acrylate crosspolymer, an ammonium acryloyldimethyltaurate/beheneth-25 methacrylate crosspolymer, an acrylates/palmeth-25 acrylate copolymer, and an acrylates/beheneth-25 methacrylate copolymer. 
     
     
         4 . The emulsion cosmetic composition of  claim 1 , wherein the self-emulsifying stabilizer comprises a diol compound having two hydroxyl groups or a mixture thereof. 
     
     
         5 . The emulsion cosmetic composition of  claim 1 , wherein the self-emulsifying stabilizer comprises at least one selected from the group consisting of 3-(2-ethylhexyl)oxylpropane-1,2-diol, 2,3-butanediol, 1,2-octanediol, 1,2-hexanediol, and 1,2-pentanediol. 
     
     
         6 . The emulsion cosmetic composition of  claim 1 , further comprising a pH buffer, wherein the pH buffer comprises at least one selected from the group consisting of citric acid, sodium citrate, sodium hydroxide, and potassium hydroxide. 
     
     
         7 . The emulsion cosmetic composition of  claim 6 , comprising, based on the total weight of the emulsion cosmetic composition, 0.05 to 5 wt % of the self-emulsifying agent, 0.01 to 5 wt % of the self-emulsifying stabilizer, and 0.01 to 5 wt % of the pH buffer. 
     
     
         8 . The emulsion cosmetic composition of  claim 1 , wherein the self-emulsifying agent and the self-emulsifying stabilizer are mixed at a weight ratio of 1:0.001 to 100. 
     
     
         9 . The emulsion cosmetic composition of  claim 1 , which is of an oil-in-water (O/W) type, a water-in-oil (W/O) type, a water-in-oil-in-water (W/O/W) type, or an oil-in-water-in-oil (O/W/O)